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M1X and M2X are the salts of a weak base and strong acid. Kh values for them are 10–7 and 10–4 respectively. Kb for M3OH is 10–4 . The decreasing order of base strength would be :
(1) M2OH, M1OH, M3OH
(2) M1OH, M3OH, M2OH
(3) M3OH, M1OH, M2OH
(4) M1OH, M2OH, M3OH
(1) M2OH, M1OH, M3OH
(2) M1OH, M3OH, M2OH
(3) M3OH, M1OH, M2OH
(4) M1OH, M2OH, M3OH
the total number of valence electron in 4.2g of N3 ion is?
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If the concentration of a solution of NaOH is 4g/dm3 ,then what mass of NaOH is contained in 250 cm3 of this solution ? [1 dm3 = 1000 cm3 ]?
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#340153 on Dec 2023
#340153 on Dec 2023